What is the best explanation for the fish surviving gradual temperature change but not a rapid temperature change?
(A) It takes time for each gene to be expressed - HSC - SSCE Biology - Question 19 - 2014 - Paper 1
Question 19
What is the best explanation for the fish surviving gradual temperature change but not a rapid temperature change?
(A) It takes time for each gene to be expressed.
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Worked Solution & Example Answer:What is the best explanation for the fish surviving gradual temperature change but not a rapid temperature change?
(A) It takes time for each gene to be expressed - HSC - SSCE Biology - Question 19 - 2014 - Paper 1
Step 1
A) It takes time for each gene to be expressed.
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Answer
While it is true that gene expression takes time, this does not directly explain the capacity of fish to survive gradual temperature changes compared to rapid ones.
Step 2
B) Enzyme activity is decreased at low temperatures.
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Answer
This option discusses enzyme activity at low temperatures, but it does not address the effect of gradual temperature changes on fish survival.
Step 3
C) The fish produce different enzymes at different temperatures.
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Answer
This statement could be partially correct; however, it doesn't directly explain the survival mechanisms during temperature changes.
Step 4
D) Some enzymes will not denature if the temperature change is gradual.
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Answer
This is the best explanation, as gradual temperature changes allow enzymes to adapt, preventing denaturation. It emphasizes the ability of the fish to cope with slow changes, which helps maintain metabolic functions.
